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Revision 1.71 Revision 1.97
1# Copyright 1999-2006 Gentoo Foundation 1# Copyright 1999-2013 Gentoo Foundation
2# Distributed under the terms of the GNU General Public License v2 2# Distributed under the terms of the GNU General Public License v2
3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.71 2009/09/08 12:34:21 robbat2 Exp $ 3# $Header: /var/cvsroot/gentoo-x86/eclass/linux-info.eclass,v 1.97 2013/02/10 02:21:55 vapier Exp $
4#
5# Original author: John Mylchreest <johnm@gentoo.org>
6# Maintainer: kernel-misc@gentoo.org
7#
8# Please direct your bugs to the current eclass maintainer :)
9 4
10# @ECLASS: linux-info.eclass 5# @ECLASS: linux-info.eclass
11# @MAINTAINER: 6# @MAINTAINER:
12# kernel-misc@gentoo.org 7# kernel-misc@gentoo.org
8# @AUTHOR:
9# Original author: John Mylchreest <johnm@gentoo.org>
13# @BLURB: eclass used for accessing kernel related information 10# @BLURB: eclass used for accessing kernel related information
14# @DESCRIPTION: 11# @DESCRIPTION:
15# This eclass is used as a central eclass for accessing kernel 12# This eclass is used as a central eclass for accessing kernel
16# related information for source or binary already installed. 13# related information for source or binary already installed.
17# It is vital for linux-mod.eclass to function correctly, and is split 14# It is vital for linux-mod.eclass to function correctly, and is split
19# using additional eclasses. 16# using additional eclasses.
20# 17#
21# "kernel config" in this file means: 18# "kernel config" in this file means:
22# The .config of the currently installed sources is used as the first 19# The .config of the currently installed sources is used as the first
23# preference, with a fall-back to bundled config (/proc/config.gz) if available. 20# preference, with a fall-back to bundled config (/proc/config.gz) if available.
21#
22# Before using any of the config-handling functions in this eclass, you must
23# ensure that one of the following functions has been called (in order of
24# preference), otherwise you will get bugs like #364041):
25# linux-info_pkg_setup
26# linux-info_get_any_version
27# get_version
28# get_running_version
24 29
25# A Couple of env vars are available to effect usage of this eclass 30# A Couple of env vars are available to effect usage of this eclass
26# These are as follows: 31# These are as follows:
27 32
28# @ECLASS-VARIABLE: KERNEL_DIR 33# @ECLASS-VARIABLE: KERNEL_DIR
40# You can also check that an option doesn't exist by 45# You can also check that an option doesn't exist by
41# prepending it with an exclamation mark (!). 46# prepending it with an exclamation mark (!).
42# 47#
43# e.g.: CONFIG_CHECK="!MTRR" 48# e.g.: CONFIG_CHECK="!MTRR"
44# 49#
45# To simply warn about a missing option, prepend a '~'. 50# To simply warn about a missing option, prepend a '~'.
46# It may be combined with '!'. 51# It may be combined with '!'.
47# 52#
48# In general, most checks should be non-fatal. The only time fatal checks should 53# In general, most checks should be non-fatal. The only time fatal checks should
49# be used is for building kernel modules or cases that a compile will fail 54# be used is for building kernel modules or cases that a compile will fail
50# without the option. 55# without the option.
99# @ECLASS-VARIABLE: KV_OUT_DIR 104# @ECLASS-VARIABLE: KV_OUT_DIR
100# @DESCRIPTION: 105# @DESCRIPTION:
101# A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless 106# A read-only variable. It's a string containing the kernel object directory, will be KV_DIR unless
102# KBUILD_OUTPUT is used. This should be used for referencing .config. 107# KBUILD_OUTPUT is used. This should be used for referencing .config.
103 108
104# @ECLASS-VARIABLE: I_KNOW_WHAT_I_AM_DOING
105# @DESCRIPTION:
106# Temporary variable for the migration to making linux-info non-fatal.
107
108# And to ensure all the weirdness with crosscompile 109# And to ensure all the weirdness with crosscompile
109inherit toolchain-funcs versionator 110inherit toolchain-funcs versionator
110 111
111EXPORT_FUNCTIONS pkg_setup 112EXPORT_FUNCTIONS pkg_setup
112 113
113DEPEND="" 114DEPEND=""
114RDEPEND="" 115RDEPEND=""
115
116[ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && \
117DEPEND="kernel_linux? ( virtual/linux-sources )"
118 116
119# Overwritable environment Var's 117# Overwritable environment Var's
120# --------------------------------------- 118# ---------------------------------------
121KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}" 119KERNEL_DIR="${KERNEL_DIR:-${ROOT}usr/src/linux}"
122 120
153 esac 151 esac
154 [ -n "${outputmsg}" ] && ${type} "${outputmsg}" 152 [ -n "${outputmsg}" ] && ${type} "${outputmsg}"
155} 153}
156 154
157qeinfo() { qout einfo "${@}" ; } 155qeinfo() { qout einfo "${@}" ; }
156qewarn() { qout ewarn "${@}" ; }
158qeerror() { qout eerror "${@}" ; } 157qeerror() { qout eerror "${@}" ; }
159 158
160# File Functions 159# File Functions
161# --------------------------------------- 160# ---------------------------------------
162 161
166# @DESCRIPTION: 165# @DESCRIPTION:
167# It detects the value of the variable defined in the file configfile. This is 166# It detects the value of the variable defined in the file configfile. This is
168# done by including the configfile, and printing the variable with Make. 167# done by including the configfile, and printing the variable with Make.
169# It WILL break if your makefile has missing dependencies! 168# It WILL break if your makefile has missing dependencies!
170getfilevar() { 169getfilevar() {
171local ERROR basefname basedname myARCH="${ARCH}" 170 local ERROR basefname basedname myARCH="${ARCH}"
172 ERROR=0 171 ERROR=0
173 172
174 [ -z "${1}" ] && ERROR=1 173 [ -z "${1}" ] && ERROR=1
175 [ ! -f "${2}" ] && ERROR=1 174 [ ! -f "${2}" ] && ERROR=1
176 175
197# @DESCRIPTION: 196# @DESCRIPTION:
198# It detects the value of the variable defined in the file configfile. 197# It detects the value of the variable defined in the file configfile.
199# This is done with sed matching an expression only. If the variable is defined, 198# This is done with sed matching an expression only. If the variable is defined,
200# you will run into problems. See getfilevar for those cases. 199# you will run into problems. See getfilevar for those cases.
201getfilevar_noexec() { 200getfilevar_noexec() {
202 local ERROR basefname basedname mycat myARCH="${ARCH}" 201 local ERROR basefname basedname mycat myARCH="${ARCH}"
203 ERROR=0 202 ERROR=0
204 mycat='cat' 203 mycat='cat'
205 204
206 [ -z "${1}" ] && ERROR=1 205 [ -z "${1}" ] && ERROR=1
207 [ ! -f "${2}" ] && ERROR=1 206 [ ! -f "${2}" ] && ERROR=1
213 eerror "getfilevar_noexec requires 2 variables, with the second a valid file." 212 eerror "getfilevar_noexec requires 2 variables, with the second a valid file."
214 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>" 213 eerror " getfilevar_noexec <VARIABLE> <CONFIGFILE>"
215 else 214 else
216 ${mycat} "${2}" | \ 215 ${mycat} "${2}" | \
217 sed -n \ 216 sed -n \
218 -e "/^[[:space:]]*${1}[[:space:]]*=[[:space:]]*\(.*\)\$/{ 217 -e "/^[[:space:]]*${1}[[:space:]]*:\\?=[[:space:]]*\(.*\)\$/{
219 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ; 218 s,^[^=]*[[:space:]]*=[[:space:]]*,,g ;
220 s,[[:space:]]*\$,,g ; 219 s,[[:space:]]*\$,,g ;
221 p 220 p
222 }" 221 }"
223 fi 222 fi
224} 223}
225 224
225# @ECLASS-VARIABLE: _LINUX_CONFIG_EXISTS_DONE
226# @INTERNAL
227# @DESCRIPTION:
228# This is only set if one of the linux_config_*exists functions has been called.
229# We use it for a QA warning that the check for a config has not been performed,
230# as linux_chkconfig* in non-legacy mode WILL return an undefined value if no
231# config is available at all.
232_LINUX_CONFIG_EXISTS_DONE=
233
234linux_config_qa_check() {
235 local f="$1"
236 if [ -z "${_LINUX_CONFIG_EXISTS_DONE}" ]; then
237 ewarn "QA: You called $f before any linux_config_exists!"
238 ewarn "QA: The return value of $f will NOT guaranteed later!"
239 fi
240}
226 241
227# @FUNCTION: linux_config_src_exists 242# @FUNCTION: linux_config_src_exists
228# @RETURN: true or false 243# @RETURN: true or false
229# @DESCRIPTION: 244# @DESCRIPTION:
230# It returns true if .config exists in a build directory otherwise false 245# It returns true if .config exists in a build directory otherwise false
231linux_config_src_exists() { 246linux_config_src_exists() {
232 [ -s "${KV_OUT_DIR}/.config" ] 247 export _LINUX_CONFIG_EXISTS_DONE=1
248 [[ -n ${KV_OUT_DIR} && -s ${KV_OUT_DIR}/.config ]]
233} 249}
234 250
235# @FUNCTION: linux_config_bin_exists 251# @FUNCTION: linux_config_bin_exists
236# @RETURN: true or false 252# @RETURN: true or false
237# @DESCRIPTION: 253# @DESCRIPTION:
238# It returns true if .config exists in /proc, otherwise false 254# It returns true if .config exists in /proc, otherwise false
239linux_config_bin_exists() { 255linux_config_bin_exists() {
256 export _LINUX_CONFIG_EXISTS_DONE=1
240 [ -s "/proc/config.gz" ] 257 [[ -s /proc/config.gz ]]
241} 258}
242 259
243# @FUNCTION: linux_config_exists 260# @FUNCTION: linux_config_exists
244# @RETURN: true or false 261# @RETURN: true or false
245# @DESCRIPTION: 262# @DESCRIPTION:
247# 264#
248# This function MUST be checked before using any of the linux_chkconfig_* 265# This function MUST be checked before using any of the linux_chkconfig_*
249# functions. 266# functions.
250linux_config_exists() { 267linux_config_exists() {
251 linux_config_src_exists || linux_config_bin_exists 268 linux_config_src_exists || linux_config_bin_exists
269}
270
271# @FUNCTION: linux_config_path
272# @DESCRIPTION:
273# Echo the name of the config file to use. If none are found,
274# then return false.
275linux_config_path() {
276 if linux_config_src_exists; then
277 echo "${KV_OUT_DIR}/.config"
278 elif linux_config_bin_exists; then
279 echo "/proc/config.gz"
280 else
281 return 1
282 fi
252} 283}
253 284
254# @FUNCTION: require_configured_kernel 285# @FUNCTION: require_configured_kernel
255# @DESCRIPTION: 286# @DESCRIPTION:
256# This function verifies that the current kernel is configured (it checks against the existence of .config) 287# This function verifies that the current kernel is configured (it checks against the existence of .config)
271# @DESCRIPTION: 302# @DESCRIPTION:
272# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config 303# It checks that CONFIG_<option>=y or CONFIG_<option>=m is present in the current kernel .config
273# If linux_config_exists returns false, the results of this are UNDEFINED. You 304# If linux_config_exists returns false, the results of this are UNDEFINED. You
274# MUST call linux_config_exists first. 305# MUST call linux_config_exists first.
275linux_chkconfig_present() { 306linux_chkconfig_present() {
276local RESULT 307 linux_config_qa_check linux_chkconfig_present
277 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 308 [[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == [my] ]]
278 local config
279 config="${KV_OUT_DIR}/.config"
280 [ ! -f "${config}" ] && config="/proc/config.gz"
281 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
282 [ "${RESULT}" = "m" -o "${RESULT}" = "y" ] && return 0 || return 1
283} 309}
284 310
285# @FUNCTION: linux_chkconfig_module 311# @FUNCTION: linux_chkconfig_module
286# @USAGE: option 312# @USAGE: option
287# @RETURN: true or false 313# @RETURN: true or false
288# @DESCRIPTION: 314# @DESCRIPTION:
289# It checks that CONFIG_<option>=m is present in the current kernel .config 315# It checks that CONFIG_<option>=m is present in the current kernel .config
290# If linux_config_exists returns false, the results of this are UNDEFINED. You 316# If linux_config_exists returns false, the results of this are UNDEFINED. You
291# MUST call linux_config_exists first. 317# MUST call linux_config_exists first.
292linux_chkconfig_module() { 318linux_chkconfig_module() {
293local RESULT 319 linux_config_qa_check linux_chkconfig_module
294 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 320 [[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == m ]]
295 local config
296 config="${KV_OUT_DIR}/.config"
297 [ ! -f "${config}" ] && config="/proc/config.gz"
298 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
299 [ "${RESULT}" = "m" ] && return 0 || return 1
300} 321}
301 322
302# @FUNCTION: linux_chkconfig_builtin 323# @FUNCTION: linux_chkconfig_builtin
303# @USAGE: option 324# @USAGE: option
304# @RETURN: true or false 325# @RETURN: true or false
305# @DESCRIPTION: 326# @DESCRIPTION:
306# It checks that CONFIG_<option>=y is present in the current kernel .config 327# It checks that CONFIG_<option>=y is present in the current kernel .config
307# If linux_config_exists returns false, the results of this are UNDEFINED. You 328# If linux_config_exists returns false, the results of this are UNDEFINED. You
308# MUST call linux_config_exists first. 329# MUST call linux_config_exists first.
309linux_chkconfig_builtin() { 330linux_chkconfig_builtin() {
310local RESULT 331 linux_config_qa_check linux_chkconfig_builtin
311 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 332 [[ $(getfilevar_noexec "CONFIG_$1" "$(linux_config_path)") == y ]]
312 local config
313 config="${KV_OUT_DIR}/.config"
314 [ ! -f "${config}" ] && config="/proc/config.gz"
315 RESULT="$(getfilevar_noexec CONFIG_${1} "${config}")"
316 [ "${RESULT}" = "y" ] && return 0 || return 1
317} 333}
318 334
319# @FUNCTION: linux_chkconfig_string 335# @FUNCTION: linux_chkconfig_string
320# @USAGE: option 336# @USAGE: option
321# @RETURN: CONFIG_<option> 337# @RETURN: CONFIG_<option>
322# @DESCRIPTION: 338# @DESCRIPTION:
323# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel). 339# It prints the CONFIG_<option> value of the current kernel .config (it requires a configured kernel).
324# If linux_config_exists returns false, the results of this are UNDEFINED. You 340# If linux_config_exists returns false, the results of this are UNDEFINED. You
325# MUST call linux_config_exists first. 341# MUST call linux_config_exists first.
326linux_chkconfig_string() { 342linux_chkconfig_string() {
327 [ -z "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 343 linux_config_qa_check linux_chkconfig_string
328 local config
329 config="${KV_OUT_DIR}/.config"
330 [ ! -f "${config}" ] && config="/proc/config.gz"
331 getfilevar_noexec "CONFIG_${1}" "${config}" 344 getfilevar_noexec "CONFIG_$1" "$(linux_config_path)"
332} 345}
333 346
334# Versioning Functions 347# Versioning Functions
335# --------------------------------------- 348# ---------------------------------------
336 349
348# kernel_is 2 6 returns true 361# kernel_is 2 6 returns true
349# kernel_is 2 6 8 returns false 362# kernel_is 2 6 8 returns false
350# kernel_is 2 6 9 returns true 363# kernel_is 2 6 9 returns true
351# @CODE 364# @CODE
352 365
353# got the jist yet? 366# Note: duplicated in kernel-2.eclass
354
355kernel_is() { 367kernel_is() {
356 # if we haven't determined the version yet, we need to. 368 # if we haven't determined the version yet, we need to.
357 linux-info_get_any_version 369 linux-info_get_any_version
358 370
371 # Now we can continue
359 local operator test value x=0 y=0 z=0 372 local operator test value
360 373
361 case ${1} in 374 case ${1#-} in
362 -lt|lt) operator="-lt"; shift;; 375 lt) operator="-lt"; shift;;
363 -gt|gt) operator="-gt"; shift;; 376 gt) operator="-gt"; shift;;
364 -le|le) operator="-le"; shift;; 377 le) operator="-le"; shift;;
365 -ge|ge) operator="-ge"; shift;; 378 ge) operator="-ge"; shift;;
366 -eq|eq) operator="-eq"; shift;; 379 eq) operator="-eq"; shift;;
367 *) operator="-eq";; 380 *) operator="-eq";;
368 esac 381 esac
369
370 for x in ${@}; do
371 for((y=0; y<$((3 - ${#x})); y++)); do value="${value}0"; done
372 value="${value}${x}"
373 z=$((${z} + 1))
374
375 case ${z} in
376 1) for((y=0; y<$((3 - ${#KV_MAJOR})); y++)); do test="${test}0"; done;
377 test="${test}${KV_MAJOR}";;
378 2) for((y=0; y<$((3 - ${#KV_MINOR})); y++)); do test="${test}0"; done;
379 test="${test}${KV_MINOR}";;
380 3) for((y=0; y<$((3 - ${#KV_PATCH})); y++)); do test="${test}0"; done;
381 test="${test}${KV_PATCH}";;
382 *) die "Error in kernel-2_kernel_is(): Too many parameters.";; 382 [[ $# -gt 3 ]] && die "Error in kernel-2_kernel_is(): too many parameters"
383 esac 383
384 done 384 : $(( test = (KV_MAJOR << 16) + (KV_MINOR << 8) + KV_PATCH ))
385 385 : $(( value = (${1:-${KV_MAJOR}} << 16) + (${2:-${KV_MINOR}} << 8) + ${3:-${KV_PATCH}} ))
386 [ ${test} ${operator} ${value} ] && return 0 || return 1 386 [ ${test} ${operator} ${value} ]
387} 387}
388 388
389get_localversion() { 389get_localversion() {
390 local lv_list i x 390 local lv_list i x
391 391
399 done 399 done
400 x=${x/ /} 400 x=${x/ /}
401 echo ${x} 401 echo ${x}
402} 402}
403 403
404# Check if the Makefile is valid for direct parsing.
405# Check status results:
406# - PASS, use 'getfilevar' to extract values
407# - FAIL, use 'getfilevar_noexec' to extract values
408# The check may fail if:
409# - make is not present
410# - corruption exists in the kernel makefile
411get_makefile_extract_function() {
412 local a='' b='' mkfunc='getfilevar'
413 a="$(getfilevar VERSION ${KERNEL_MAKEFILE})"
414 b="$(getfilevar_noexec VERSION ${KERNEL_MAKEFILE})"
415 [[ "${a}" != "${b}" ]] && mkfunc='getfilevar_noexec'
416 echo "${mkfunc}"
417}
418
404# internal variable, so we know to only print the warning once 419# internal variable, so we know to only print the warning once
405get_version_warning_done= 420get_version_warning_done=
406 421
407# @FUNCTION: get_version 422# @FUNCTION: get_version
408# @DESCRIPTION: 423# @DESCRIPTION:
413# 428#
414# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid 429# The KV_DIR is set using the KERNEL_DIR env var, the KV_DIR_OUT is set using a valid
415# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the 430# KBUILD_OUTPUT (in a decreasing priority list, we look for the env var, makefile var or the
416# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build). 431# symlink /lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build).
417get_version() { 432get_version() {
418 local kbuild_output 433 local kbuild_output mkfunc tmplocal
419 434
420 # no need to execute this twice assuming KV_FULL is populated. 435 # no need to execute this twice assuming KV_FULL is populated.
421 # we can force by unsetting KV_FULL 436 # we can force by unsetting KV_FULL
422 [ -n "${KV_FULL}" ] && return 0 437 [ -n "${KV_FULL}" ] && return 0
423 438
467 # KBUILD_OUTPUT, and we need this for .config and localversions-* 482 # KBUILD_OUTPUT, and we need this for .config and localversions-*
468 # so we better find it eh? 483 # so we better find it eh?
469 # do we pass KBUILD_OUTPUT on the CLI? 484 # do we pass KBUILD_OUTPUT on the CLI?
470 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}" 485 OUTPUT_DIR="${OUTPUT_DIR:-${KBUILD_OUTPUT}}"
471 486
487 # keep track of it
488 KERNEL_MAKEFILE="${KV_DIR}/Makefile"
489
490 # Decide the function used to extract makefile variables.
491 mkfunc="$(get_makefile_extract_function "${KERNEL_MAKEFILE}")"
492
472 # And if we didn't pass it, we can take a nosey in the Makefile 493 # And if we didn't pass it, we can take a nosey in the Makefile
473 kbuild_output="$(getfilevar_noexec KBUILD_OUTPUT ${KV_DIR}/Makefile)" 494 kbuild_output="$(${mkfunc} KBUILD_OUTPUT ${KERNEL_MAKEFILE})"
474 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}" 495 OUTPUT_DIR="${OUTPUT_DIR:-${kbuild_output}}"
475 496
476 # And contrary to existing functions I feel we shouldn't trust the 497 # And contrary to existing functions I feel we shouldn't trust the
477 # directory name to find version information as this seems insane. 498 # directory name to find version information as this seems insane.
478 # so we parse ${KV_DIR}/Makefile 499 # so we parse ${KERNEL_MAKEFILE}
479 KV_MAJOR="$(getfilevar_noexec VERSION ${KV_DIR}/Makefile)" 500 KV_MAJOR="$(${mkfunc} VERSION ${KERNEL_MAKEFILE})"
480 KV_MINOR="$(getfilevar_noexec PATCHLEVEL ${KV_DIR}/Makefile)" 501 KV_MINOR="$(${mkfunc} PATCHLEVEL ${KERNEL_MAKEFILE})"
481 KV_PATCH="$(getfilevar_noexec SUBLEVEL ${KV_DIR}/Makefile)" 502 KV_PATCH="$(${mkfunc} SUBLEVEL ${KERNEL_MAKEFILE})"
482 KV_EXTRA="$(getfilevar_noexec EXTRAVERSION ${KV_DIR}/Makefile)" 503 KV_EXTRA="$(${mkfunc} EXTRAVERSION ${KERNEL_MAKEFILE})"
483 504
484 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ] 505 if [ -z "${KV_MAJOR}" -o -z "${KV_MINOR}" -o -z "${KV_PATCH}" ]
485 then 506 then
486 if [ -z "${get_version_warning_done}" ]; then 507 if [ -z "${get_version_warning_done}" ]; then
487 get_version_warning_done=1 508 get_version_warning_done=1
493 514
494 # and in newer versions we can also pull LOCALVERSION if it is set. 515 # and in newer versions we can also pull LOCALVERSION if it is set.
495 # but before we do this, we need to find if we use a different object directory. 516 # but before we do this, we need to find if we use a different object directory.
496 # This *WILL* break if the user is using localversions, but we assume it was 517 # This *WILL* break if the user is using localversions, but we assume it was
497 # caught before this if they are. 518 # caught before this if they are.
498 [ "${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}" == "$(uname -r)" ] && \
499 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}" 519 OUTPUT_DIR="${OUTPUT_DIR:-/lib/modules/${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}/build}"
500 520
501 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})" 521 [ -h "${OUTPUT_DIR}" ] && KV_OUT_DIR="$(readlink -f ${OUTPUT_DIR})"
502 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}" 522 [ -d "${OUTPUT_DIR}" ] && KV_OUT_DIR="${OUTPUT_DIR}"
503 if [ -n "${KV_OUT_DIR}" ]; 523 if [ -n "${KV_OUT_DIR}" ];
504 then 524 then
505 qeinfo "Found kernel object directory:" 525 qeinfo "Found kernel object directory:"
506 qeinfo " ${KV_OUT_DIR}" 526 qeinfo " ${KV_OUT_DIR}"
507
508 KV_LOCAL="$(get_localversion ${KV_OUT_DIR})"
509 fi 527 fi
510 # and if we STILL have not got it, then we better just set it to KV_DIR 528 # and if we STILL have not got it, then we better just set it to KV_DIR
511 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}" 529 KV_OUT_DIR="${KV_OUT_DIR:-${KV_DIR}}"
512 530
513 KV_LOCAL="${KV_LOCAL}$(get_localversion ${KV_DIR})" 531 # Grab the kernel release from the output directory.
514 if linux_config_src_exists; then 532 # TODO: we MUST detect kernel.release being out of date, and 'return 1' from
515 KV_LOCAL="${KV_LOCAL}$(linux_chkconfig_string LOCALVERSION)" 533 # this function.
516 KV_LOCAL="${KV_LOCAL//\"/}" 534 if [ -s "${KV_OUT_DIR}"/include/config/kernel.release ]; then
535 KV_LOCAL=$(<"${KV_OUT_DIR}"/include/config/kernel.release)
536 elif [ -s "${KV_OUT_DIR}"/.kernelrelease ]; then
537 KV_LOCAL=$(<"${KV_OUT_DIR}"/.kernelrelease)
538 else
539 KV_LOCAL=
540 fi
517 541
518 # For things like git that can append extra stuff: 542 # KV_LOCAL currently contains the full release; discard the first bits.
519 [ -e ${KV_DIR}/scripts/setlocalversion ] && 543 tmplocal=${KV_LOCAL#${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}}
520 linux_chkconfig_builtin LOCALVERSION_AUTO && 544
521 KV_LOCAL="${KV_LOCAL}$(sh ${KV_DIR}/scripts/setlocalversion ${KV_DIR})" 545 # If the updated local version was not changed, the tree is not prepared.
546 # Clear out KV_LOCAL in that case.
547 # TODO: this does not detect a change in the localversion part between
548 # kernel.release and the value that would be generated.
549 if [ "$KV_LOCAL" = "$tmplocal" ]; then
550 KV_LOCAL=
551 else
552 KV_LOCAL=$tmplocal
522 fi 553 fi
523 554
524 # And we should set KV_FULL to the full expanded version 555 # And we should set KV_FULL to the full expanded version
525 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}" 556 KV_FULL="${KV_MAJOR}.${KV_MINOR}.${KV_PATCH}${KV_EXTRA}${KV_LOCAL}"
526 557
535# It gets the version of the current running kernel and the result is the same as get_version() if the 566# It gets the version of the current running kernel and the result is the same as get_version() if the
536# function can find the sources. 567# function can find the sources.
537get_running_version() { 568get_running_version() {
538 KV_FULL=$(uname -r) 569 KV_FULL=$(uname -r)
539 570
571 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile && -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
572 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
573 KBUILD_OUTPUT=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
574 unset KV_FULL
575 get_version
576 return $?
540 if [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then 577 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/source/Makefile ]]; then
541 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source) 578 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/source)
542 unset KV_FULL 579 unset KV_FULL
543 get_version 580 get_version
544 return $? 581 return $?
545 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then 582 elif [[ -f ${ROOT}/lib/modules/${KV_FULL}/build/Makefile ]]; then
546 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build) 583 KERNEL_DIR=$(readlink -f ${ROOT}/lib/modules/${KV_FULL}/build)
547 unset KV_FULL 584 unset KV_FULL
548 get_version 585 get_version
549 return $? 586 return $?
550 else 587 else
588 # This handles a variety of weird kernel versions. Make sure to update
589 # tests/linux-info:get_running_version.sh if you want to change this.
590 local kv_full=${KV_FULL//[-+_]*}
551 KV_MAJOR=$(get_version_component_range 1 ${KV_FULL}) 591 KV_MAJOR=$(get_version_component_range 1 ${kv_full})
552 KV_MINOR=$(get_version_component_range 2 ${KV_FULL}) 592 KV_MINOR=$(get_version_component_range 2 ${kv_full})
553 KV_PATCH=$(get_version_component_range 3- ${KV_FULL}) 593 KV_PATCH=$(get_version_component_range 3 ${kv_full})
554 KV_PATCH=${KV_PATCH//-*} 594 KV_EXTRA="${KV_FULL#${KV_MAJOR}.${KV_MINOR}${KV_PATCH:+.${KV_PATCH}}}"
555 [[ -n ${KV_FULL#*-} ]] && [[ -n ${KV_FULL//${KV_FULL#*-}} ]] \ 595 : ${KV_PATCH:=0}
556 && KV_EXTRA="-${KV_FULL#*-}"
557 fi 596 fi
558 return 0 597 return 0
559} 598}
560 599
561# This next function is named with the eclass prefix to avoid conflicts with 600# This next function is named with the eclass prefix to avoid conflicts with
564# @FUNCTION: linux-info_get_any_version 603# @FUNCTION: linux-info_get_any_version
565# @DESCRIPTION: 604# @DESCRIPTION:
566# This attempts to find the version of the sources, and otherwise falls back to 605# This attempts to find the version of the sources, and otherwise falls back to
567# the version of the running kernel. 606# the version of the running kernel.
568linux-info_get_any_version() { 607linux-info_get_any_version() {
569 get_version 608 get_version
570 if [[ $? -ne 0 ]]; then 609 if [[ $? -ne 0 ]]; then
571 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version" 610 ewarn "Unable to calculate Linux Kernel version for build, attempting to use running version"
572 get_running_version 611 get_running_version
573 fi 612 fi
574} 613}
575 614
576 615
577# ebuild check functions 616# ebuild check functions
583check_kernel_built() { 622check_kernel_built() {
584 # if we haven't determined the version yet, we need to 623 # if we haven't determined the version yet, we need to
585 require_configured_kernel 624 require_configured_kernel
586 get_version 625 get_version
587 626
627 local versionh_path
628 if kernel_is -ge 3 7; then
629 versionh_path="include/generated/uapi/linux/version.h"
630 else
631 versionh_path="include/linux/version.h"
632 fi
633
588 if [ ! -f "${KV_OUT_DIR}/include/linux/version.h" ] 634 if [ ! -f "${KV_OUT_DIR}/${versionh_path}" ]
589 then 635 then
590 eerror "These sources have not yet been prepared." 636 eerror "These sources have not yet been prepared."
591 eerror "We cannot build against an unprepared tree." 637 eerror "We cannot build against an unprepared tree."
592 eerror "To resolve this, please type the following:" 638 eerror "To resolve this, please type the following:"
593 eerror 639 eerror
606check_modules_supported() { 652check_modules_supported() {
607 # if we haven't determined the version yet, we need too. 653 # if we haven't determined the version yet, we need too.
608 require_configured_kernel 654 require_configured_kernel
609 get_version 655 get_version
610 656
611 if ! linux_chkconfig_builtin "MODULES" 657 if ! linux_chkconfig_builtin "MODULES"; then
612 then
613 eerror "These sources do not support loading external modules." 658 eerror "These sources do not support loading external modules."
614 eerror "to be able to use this module please enable \"Loadable modules support\"" 659 eerror "to be able to use this module please enable \"Loadable modules support\""
615 eerror "in your kernel, recompile and then try merging this module again." 660 eerror "in your kernel, recompile and then try merging this module again."
616 die "No support for external modules in ${KV_FULL} config" 661 die "No support for external modules in ${KV_FULL} config"
617 fi 662 fi
620# @FUNCTION: check_extra_config 665# @FUNCTION: check_extra_config
621# @DESCRIPTION: 666# @DESCRIPTION:
622# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e. 667# It checks the kernel config options specified by CONFIG_CHECK. It dies only when a required config option (i.e.
623# the prefix ~ is not used) doesn't satisfy the directive. 668# the prefix ~ is not used) doesn't satisfy the directive.
624check_extra_config() { 669check_extra_config() {
625 local config negate die error reworkmodulenames 670 local config negate die error reworkmodulenames
626 local soft_errors_count=0 hard_errors_count=0 config_required=0 671 local soft_errors_count=0 hard_errors_count=0 config_required=0
672 # store the value of the QA check, because otherwise we won't catch usages
673 # after if check_extra_config is called AND other direct calls are done
674 # later.
675 local old_LINUX_CONFIG_EXISTS_DONE="${_LINUX_CONFIG_EXISTS_DONE}"
627 676
628 # if we haven't determined the version yet, we need to 677 # if we haven't determined the version yet, we need to
629 linux-info_get_any_version 678 linux-info_get_any_version
630 679
631 # Determine if we really need a .config. The only time when we don't need 680 # Determine if we really need a .config. The only time when we don't need
632 # one is when all of the CONFIG_CHECK options are prefixed with "~". 681 # one is when all of the CONFIG_CHECK options are prefixed with "~".
633 for config in ${CONFIG_CHECK} 682 for config in ${CONFIG_CHECK}; do
634 do
635 if [[ "${config:0:1}" != "~" ]]; then 683 if [[ "${config:0:1}" != "~" ]]; then
636 config_required=1 684 config_required=1
637 break 685 break
638 fi 686 fi
639 done 687 done
645 if ! linux_config_exists; then 693 if ! linux_config_exists; then
646 ewarn "Unable to check for the following kernel config options due" 694 ewarn "Unable to check for the following kernel config options due"
647 ewarn "to absence of any configured kernel sources or compiled" 695 ewarn "to absence of any configured kernel sources or compiled"
648 ewarn "config:" 696 ewarn "config:"
649 for config in ${CONFIG_CHECK}; do 697 for config in ${CONFIG_CHECK}; do
698 local_error="ERROR_${config#\~}"
699 msg="${!local_error}"
700 if [[ "x${msg}" == "x" ]]; then
701 local_error="WARNING_${config#\~}"
702 msg="${!local_error}"
703 fi
650 ewarn " - ${config#\~}" 704 ewarn " - ${config#\~}${msg:+ - }${msg}"
651 done 705 done
652 ewarn "You're on your own to make sure they are set if needed." 706 ewarn "You're on your own to make sure they are set if needed."
707 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
653 return 0 708 return 0
654 fi 709 fi
655 else 710 else
656 [ -n "${I_KNOW_WHAT_I_AM_DOING}" ] && require_configured_kernel 711 require_configured_kernel
657 fi 712 fi
658 713
659 einfo "Checking for suitable kernel configuration options..." 714 einfo "Checking for suitable kernel configuration options..."
660 715
661 for config in ${CONFIG_CHECK} 716 for config in ${CONFIG_CHECK}
734 if [[ ${hard_errors_count} > 0 ]]; then 789 if [[ ${hard_errors_count} > 0 ]]; then
735 eerror "Please check to make sure these options are set correctly." 790 eerror "Please check to make sure these options are set correctly."
736 eerror "Failure to do so may cause unexpected problems." 791 eerror "Failure to do so may cause unexpected problems."
737 eerror "Once you have satisfied these options, please try merging" 792 eerror "Once you have satisfied these options, please try merging"
738 eerror "this package again." 793 eerror "this package again."
794 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
739 die "Incorrect kernel configuration options" 795 die "Incorrect kernel configuration options"
740 elif [[ ${soft_errors_count} > 0 ]]; then 796 elif [[ ${soft_errors_count} > 0 ]]; then
741 ewarn "Please check to make sure these options are set correctly." 797 ewarn "Please check to make sure these options are set correctly."
742 ewarn "Failure to do so may cause unexpected problems." 798 ewarn "Failure to do so may cause unexpected problems."
743 else 799 else
744 eend 0 800 eend 0
745 fi 801 fi
802 export LINUX_CONFIG_EXISTS_DONE="${old_LINUX_CONFIG_EXISTS_DONE}"
746} 803}
747 804
748check_zlibinflate() { 805check_zlibinflate() {
749 # if we haven't determined the version yet, we need to 806 # if we haven't determined the version yet, we need to
750 require_configured_kernel 807 require_configured_kernel

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